11 pairs of speakers on a Connect Amp? Across 2 speaker selectors?
What is that like 2-3 watts per speaker after losses. Assuming the Connect Amp isn't burning itself up from improper setup (to low of impedance).

I'm sorry, we can debate all we want about how cheap the customer was. But the installer should have never hooked something like that up. It clearly shows a hack, that has no business in this industry.
At the very least, there should have been a cheap 2ch amp with (1) speaker distribution point.